build-script-helper.py: remove unused distutils import (#1353)

`distutils` was deprecated in Python 3.10 and will be removed in Python 3.12. We should not depend on it and this import looks unused anyway.

Author: MaxDesiatov

Utilities/build-script-helper.py

@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 
 import argparse
-from distutils import file_util
 import os
 import json
 import platform